William ross



(Hommel.)

- WY. ROSS.

UNTTED STATES PATENT OFFICE,

WILLIAM ROSS, OF MONTREAL, CANADA.

FORGE.

SPECIFICATION forming part of Letters Patent No. 576,794, dated February9, 1897.

Application filed June 5, 1895.. Serial No. 551,791. (No model.)

To all whom t may concern:

Be it known that I, WILLIAM ROSS, of the city of Montreal, in thedistrict of Montreal and Province of Quebec, Canada, have in' ventedcertainA new and useful Improvements in Forges; and I do h ereby declarethat the following is a full, clear, and exact description of the same.

This invention has for its object to produce a blacksmiths forge ofsimple and durable construction and one that will be m uch moreeffective than those at present in use, and portable.

To such ends the invention consists in the matters hereinafter setforth, and pointed out in the appended claims.

In the accompanying drawings,which illustrate one practicable anddesirable form in whichmy invention may be embodied, Figure l is a sideelevation, partly broken away, of a forge constructed according to myinvention; Fig. 2, a vertical section of same, and Fig. 3 a plan viewthereof.

As a body, frame, or support I prefer to use an open-ended metalcylinder length a, which stands on end and carries atits upper end there-pot or receptacle for the fuel, the bottom of which is alsopreferably constructed of a iianged ring b, secured by bolts b' to thecylinder-frame, and a iianged firepot section proper, b2, held againstthe under side of the ring b by means of bolts c, serving to secure aboxing c in place, so as to inclose the fire-pot section b2 and providea hot-air chamber c2 about same, the edges of the boxing fitting againstthe flanges of the section and thus holding the latter in place.

The side of the re-pot section Z22 is perforated to allow of a number ofremovable twyers b3 being located therein and secured in place by screwb4, passing through eyes in lugs thereon, the twyers being in the formof short tubular sections horizontally and radially placed, as shown,and preferably bowed, so that their ends are turned upward. The outerends of the twyers are stopped and inlets b provided in their uppersides for the entrance of air, while the inner ends direct the air atthe desired angle centrally of the fire, the bowed or curved form of thetwyers serving to arrest any dust that might enter and allow of itsbeing blown ont, thus preventing its entrance to the anism. p

Extending between this boxing c' and a transverse bar or support d,carried by the frame near the bottom thereof and perforated to receiveit,`is a .tubular guide e, located centrally of the apparatus and withitsy upper end passing through an aperture in the boxing c, so as to bein open communication with the hot-air chamber c2 and i-ts lower endclosed by a cap e', which latter, with jam-nuts e2 e2, serves to retainit in place.

The tubular guide e carries about centrally of its length a stationaryhollow piston preferably formed of two disks ff secured together bybolts f2, and the one f flanged and having a hub portionf, through whichit is secured to the guide e by a pin g, passing through both hub andguide. The tubular guide is perforated at hto communicate with theinterior of the piston, and the disksff' of 4the latter are eachperforated and provided with a check-valve k k, respectively, whichvalves are both normally closed when the' forge is not in use, but eachalternately opened and closed during operation, as will be describedfarther on.

A movable air-pumping cylinder is fitted over the hollow piston, beingmounted to slide up and down the tubular guide eand operated by means tobe presently described. The cylinder is preferably formed of end piecesor heads m m2 and a cylindrical side or body piece m, formed integralwith the end `piece m', and the whole held firmly together by means ofbolts m3, each end piece being formed with a hub portion n and, ifdesired, provided with a stuffing-box, as shown at n', and alsoperforated and having a check-valve p p2, respectively, adapted tooperate as will be presently described.

The pumping-cylinder is operated, preferably, by means of a hand-leverq, fulcrumed at r to a bracket at the top of the frame a and connectedby a rod s with the outer end of a second lever t, projecting through aslot t in the frame a and having its inner end pivotally connected, asat u, with the interior of the frame, the pumping-cylinder beingpivotally connected with the central portion of the lever, whichislooped to encircle the tubular guide e.

pumping mech- IOO As an auxiliary device, for the purpose of startingthe cylinder in its downward movement, a coiled spring encircling theguide between the boxing c' and the top of the pumping-cylinder, asshown at r, may be employed.

In operation the up-and-down movement of the pumping-cylinder will causeair to alternately enter the cylinder-chambers A B on either side of thepiston, the check-valve p being open as the cylinder ascends and closedas it descends, and the valve p2 being closed as the cylinder ascendsand open as it de scends, while the valve 7J in the piston is closed asthe cylinder ascends and open as it descends, and the valve k open asthe cylinder ascends and closed as it descends, the draw ingsillustrating the operation of the various valves as the cylinderdescends. It will thus be seen that in ascending the chamber A of thepumpingscylinder receives and becomes filled with air, while the air inchamber B is forced through the valve it into the hollow piston andthence 'through the tubnlargnide c to the chamber c2, surrounding thetire-pot proper, where it can be heated before passing through thetwyers to the fuel, while in descending the same action is repealedreversely, fresh air entering` chamber B and the air in chamber A beingforced to the t-wyers.

If desired a large number of tire-pots could be blown from a singlepumping mechanism of the construction shown, and preferably 0perated bysteam or other power, as it would only be necessary to connect theseveral airchambers c2 by conductors, as indicated by dotted lilies inFig. 2.

That I claim is as follows:

l. In a forge, the combination of a frame or support, ai'uel1'eceptacleor tire-pot, an air-conductor in communication with said re ceptacle orfire-pot, an intact stationary hollow piston of inclosing rigidcylindrical form, carried by said conductor comm unicating therewith,and provided with an inlet iu each end thereof and a separate andindependently-operating valve for each inlet, a 1nova ble cylinderencircling and inclosing such piston, provided with valve-controlledinlets and adapted to receive and force airinto said piston and meansfor actuating` such cylinder for the purpose set forth. i

2. In a forge, the combination of a frame or support, a fuel-receptacleor tire-pot, an airconductor extending vertically beneath saidreceptacle or Iire-pot and communieating with same, an intact stationaryhollow piston of inclosing rigid cylindricalform carried by saidair-conductor with its inner space in communication with the inner spaceof such conductor and providedwith an inlet in each end thereof and aseparate and indepen dently-operating valve for each inlet and a movablecylinder encircling and inclosing such piston, provided withvalve-controlled inlets and adapted to receive and force air into saidpiston with means for actuating such cylinder, for the purpose setforth.

3. In a forge, the combination of a frame or support, a fuel-receptacleor tire-pot, an airconductor in communication with said receptacle orfire-pot, an intact stationary hollow piston of inclosing rigidcylindrical form, carried by said conductor com municating therewith,and provided with an inlet in each end thereof and a Separate andindependently operating valve for each inlet, a movable cylinderencircling and inclosing such piston, provided with valve-controlledinlets.

t. In a forge, a fuel-receptacle or fire-pot havingtwyers extendingthrough its sides, the twycrs being curved and placed with their convexsides underinost, for the purpose set forth.

5. In a forge, a fuelreceptacle or tire-pot having twyers ext endingthrough its sides, the twyers being curved and placed with their convexside undermost their inner ends open and their outer ends closed andinlets in the uppermost side of same near the closed ends for thepurpose set forth.

6. The twyer of curved form and with open and closed ends and an inletin the concave side thereof near the closed end, for the purpose setforth.

7. In a forge, the combination with a fuelreceptacle or fire-pot, of ahot-air chamber encircling same, an air-inlet to the chamber and inletsfrom the chamberto the tire-pot in the form of curved twyers placed withtheir convex side undermost extending t ansversely through the sides ofthe fire-pot, for the purpose set forth.

WILLIAM ROSS.

W itn csses:

WILL I. MCFEAT, FRED J. SEARS.

IOO

